Method for improving the setup of telephone-to-telephone calls

Abstract

Method for setting up telephone-to-telephone calls using telephones connected to a PSTN / ISDN access network and using a separate packet-switched network as a by-pass network, wherein telephone gateways (GW) provide bridges between the access network and the by-pass network, and connections are established between a calling party (A) telephone and a first gateway (GWa) and between a second gateway (GWb) and a called party (B) telephone. The method includes the steps of: dialing, by a calling party (A) in a one-step procedure, a by-pass network service prefix together with the number of a called party (B), wherein the by-pass network service prefix includes an IN-service prefix; and analyzing the by-pass network service prefix to identify the relevant IN service for thereby routing the call to an IN node which can execute the IN service, the IN service establishing a call to a first gateway (GWa) selected from one of a plurality of gateways (GW), whereby the first gateway is made service transparent to the calling party (A).

Description

FIELD OF THE INVENTION[0001]Generally, the present invention relates to Internet telephony and intelligent networks (IN) function. More specifically, the present invention relates to a method for improving the setup of telephone-to-telephone calls using telephones connected to a PSTN / ISDN access network and using a separat network, especially Internet as a substantial by-pass network, special telephone gateways (GW) forming bridges between the access network and said by-pass network, and connections being established between the user telephones (A,B) and the gateways (GW) that bridge the call.BACKGROUND OF THE INVENTION[0002]The application area of the present invention has been developed in connection with low tariff international telephone-to-telephone calls using the Internet as the main carrier network, but the general aspect of the invention may also be related to any quality of service required.[0003]Furthermore, the present invention is applicable not oly to international and...

AI Technical Summary

Benefits of technology

[0018]An object of the present invention is to provide a method for improving the setup of telephone-to-telephone calls in relation to the prior art procedures.

[0020]More specifically, an object of the present invention is to make the associated gateways transparent to the caller.

[0024]In other words, the present invention allows the caller to handle the call set-up in one single phase, just as in case of conventional telephone calls, at the same time as the gateways appear transparent to said caller.

Problems solved by technology

However, the known solutions require the caller to handle the call set up in two distinct phases which is cumbersome.

There are also other problems to the known solutions.

Images